Documentation

Documentation for WHMCS Admin

Turn WHMCS into a lightweight knowledge base for your staff. Documentation is an admin-area addon that organises content in a tree (folders, pages, and structured tables) so procedures, internal wikis, and client-specific notes stay next to your billing and support data.

Who it is for

Hosters and agencies that want one place for internal how-tos and client context
Teams that already live in WHMCS and prefer no extra wiki login
Shops that need client-scoped notes as well as global documentation

Highlights

Flexible structure: Folders, rich HTML pages (visual editor), and table-style datasets for repeatable information.
Global or per client: Maintain a shared library and/or documentation tied to individual clients.
Templates: Start new pages from reusable templates to keep layout and wording consistent.
Media & attachments: Integrate with WHMCS File Manager for images and linked files where your setup allows.
Diagrams: Optional Draw.io embed base URL in settings for diagrams inside content.
Search: Content is searchable from the addon; relevant hits can surface in WHMCS Intelligent Search (subject to staff permissions).
Access control: Works with Operations permissions so only authorised roles see global or client documentation.
Localised UI: Language files for a consistent admin experience (e.g. English / German).

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Version Compatibility

Compatible with WHMCS v9.0

Full Version Compatibility

All versions of WHMCS v9.0
Selected versions of WHMCS v8.13
8.13.0 - 8.13.1
All versions of WHMCS v8.12
All versions of WHMCS v8.11
Selected versions of WHMCS v8.10
8.10.0
Selected versions of WHMCS v8.9
8.9.0
Selected versions of WHMCS v8.8
8.8.0
All versions of WHMCS v8.7
All versions of WHMCS v8.6
All versions of WHMCS v8.5

System Requirements

PHP 8.1+

* Requirements listed are in addition to the WHMCS default system requirements.

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Visit Website Contact Support

Developed By OneSystems GmbH

Changelog

v1.0.0 Released April 4th, 2026

Latest Version

Added

Initial public release of the Documentation admin addon for WHMCS.
Content tree in the admin area: folders, rich-text pages (HTML / visual editor), and structured data tables with configurable columns and row editing.
Scope model: maintain global documentation and/or per-client documentation from the same interface.
Templates for pages: create, edit, activate, and apply templates when creating new content.
Attachments on pages: link files from the WHMCS File Manager where available; optional removal of links vs. physical file deletion according to permissions.
Draw.io integration: configurable embed base URL in addon settings for diagrams in content.
Full-text search across documentation content, with optional surfacing of results in WHMCS Intelligent Search for authorised staff (subject to permission checks).
OneSystems OPS integration: granular staff permissions for global and client-scoped documentation.
Localised admin UI via language files (e.g. English and German).
Database migrations for a consolidated schema on install and upgrade paths.
Licensing: OneSystems license key support in module configuration (with update/version display where applicable).

Notes

This version targets current WHMCS admin environments; File Manager and embed behaviour may depend on your WHMCS version and related modules.